Say I have the gene of cystic fibrosis, can my child have it?

CFF. Both the mother and father have to be carriers. it is a genetic disease and genetic counseling is available. The CF foundation also has information about CF transmission.
Blisters . You can buy calluse pads in the store that can be used to off load a blister. Apply a antibiotic ointment or cream . As long as you can pad it off so that you can walk without being in pain you should be able to walk on the foot.